気泡周囲の気液二相流―電磁流体連成解析による磁場印加形アルカリ水電解の過電圧抑制機構の検討

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2020/07/01

タイトル(英語): Overvoltage Suppression Mechanism of Alkaline Water Electrolysis by Magnetic Field with Two-phase Flow and Magneto Hydro Dynamic Coupling Numerical Simulation Around a Bubble

著者名: 兒玉　学（東京工業大学 工学院 機械系），木内　豪士（東京工業大学 工学院 機械系），鳥居　健次郎（東京工業大学 工学院 機械系），平井　秀一郎（東京工業大学 工学院 機械系）

著者名(英語): Manabu Kodama (Tokyo Institute of Technology), Takeshi Kiuchi (Tokyo Institute of Technology), Kenjiro Torii (Tokyo Institute of Technology), Shuichiro Hirai (Tokyo Institute of Technology)

キーワード: 電磁流体力学，水素製造，アルカリ水電解，気液二相流，電気化学　　magnetohydrodynamics，hydrogen generation，alkaline water electrolysis，two-phase flow，electrochemistry

要約(英語): Three dimensional magnetohydrodynamic, two-phase flow and electrochemical reaction coupling numerical simulation of alkaline water electrolysis with magnetic field is conducted to estimate and reveal the mechanism of overvoltage suppression with the magnetic field. The numerical results shown that both vertical magnetic field to the electrode and parallel magnetic field to the electrode suppress the overpotential by the mixing of the electrolyte. This mixing is induced by the secondary flow in both cases. The overvoltage suppression is constantly increased with the increase in magnetic flux density in the case with parallel magnetic field, however, that is saturates in the case with vertical magnetic field to the electrode due to the bubble position is changed by the flow.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.140 No.7 （2020）

本誌掲載ページ: 617-622 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/140/7/140_617/_article/-char/ja/